NYPD cops will be required to report every instance in which they use force, in a broad program designed to create more transparency, The Post has learned.

Commissioner Bill Bratton on Thursday will announce the plan, which will record use-of-force incidents that include not only legitimate arrests, but encounters such as the takedown of former tennis pro James Blake, sources said.

“The cops and the unions are expected to be unhappy with the announcement,” one law enforcement source said.

The NYPD patrol guide will be updated to indicate that every instance of a takedown, baton blow or pepper spray use be reported.

After a report is made, it will be determined whether the officer did anything wrong — and, if so, he or she could face discipline ranging from the loss of vacation days to dismissal, a source said.

The initiative will coincide with the addition of hundreds of Taser stun guns for patrol officers, a source said.

The weapons are now used only by some sergeants and cops in the Emergency Service Unit.

Blake was wrongly detained in Midtown last month in a case of mistaken identity. Some critics questioned whether that incident was properly reported to supervisors, and wondered if similar encounters that take place with everyday citizens go unreported.

In the Garner case, Officer Daniel Pantaleo tackled him and put him in a submission hold after the 350-pound suspect resisted arrest for selling loose cigarettes in July 2014. The medical examiner ruled that a chokehold contributed to Garner’s death.

Four months later, rookie cop Peter Liang had his weapon drawn while patrolling a dark stairwell in a housing complex and accidentally fired a shot that ricocheted on an unarmed Gurley

New guidelines will be introduced on when an officer should draw his weapon, as well as when a cop should use other, nonlethal levels of force.

“Everything will be documented,” one law enforcement source said. “When police have any kind of interaction where force is used, it will be looked at and analyzed and they will determine how to deal with it.”